CN212047265U

CN212047265U - Headrest airbag system and headrest airbag

Info

Publication number: CN212047265U
Application number: CN201922159831.4U
Authority: CN
Inventors: 蒋强岳; 李俊辰
Original assignee: Zhejiang Songyuan Automotive Safety Systems Co ltd
Current assignee: Zhejiang Songyuan Automotive Safety Systems Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-12-01
Anticipated expiration: 2029-12-05

Abstract

The application discloses headrest air bag system and headrest air bag, headrest air bag system includes: the headrest airbag, the gas generator, the electronic control device, the headrest body and the sensor; the headrest airbag is arranged in the headrest body; the gas generator is connected with the headrest airbag through an air duct; the electronic control device is electrically connected with the sensor; the unfolding shape of the headrest airbag in the working state can effectively wrap the left side part and the right side part of the head of a passenger, so that when the left side part and the right side part of the head of the passenger and other objects, particularly hard objects, form secondary collision, for example, when secondary collision is generated among the heads of multiple passengers, effective buffering is formed, the injury on the side parts of the heads of the passengers is avoided or reduced, and the problem that the personal safety protection of the passengers by the traditional airbag is insufficient can be solved.

Description

Headrest airbag system and headrest airbag

Technical Field

The utility model relates to a traffic safety field, concretely relates to headrest air bag system. The present application also relates to a headrest airbag.

Background

In modern life, with the increasing popularization of automobiles, the running speed of automobiles is continuously increased, and under the situation, the protection of personal safety of drivers and passengers is particularly important.

Automobile airbags and safety belts are typical passive safety protection devices. When the vehicle collides with an obstacle, it is called a primary collision, and when the occupant collides with an interior member, it is called a secondary collision. As an auxiliary safety protection device, when a primary collision occurs to an automobile, an air cushion filled with gas is rapidly opened by an air bag after the primary collision and before the secondary collision, so that a passenger can 'pout on' the air cushion when moving due to inertia, and the impact force can be uniformly distributed on the head and the chest, thereby preventing the direct collision between the flesh of the fragile passenger and the automobile body and greatly reducing the possibility of injury. The utility of automotive airbags in combination with seat belts to protect occupants is becoming more and more certain.

Known in the art are a main-drive airbag, a sub-drive airbag, a side-airbag, and a knee airbag. However, there are still many weak protection portions when the automobile is collided, and for example, in the case of many members, there is a situation where the passengers collide with each other due to the collision of the automobile, and there is a lack of effective safety protection at present.

SUMMERY OF THE UTILITY MODEL

The utility model provides a headrest air bag system to solve among the prior art to the insufficient problem of passenger's safety protection.

The utility model also provides a headrest gasbag.

The embodiment of the present application provides a headrest airbag system, includes: the headrest airbag, the gas generator, the electronic control device, the headrest body and the sensor; the headrest airbag is arranged in the headrest body; the gas generator is connected with the headrest airbag through an air duct; the electronic control device is electrically connected with the sensor; the unfolding shape of the headrest airbag in the working state can effectively wrap the left side part and the right side part of the head of a passenger.

Optionally, the deployed shape of the headrest airbag in the working state can also form an effective package on the top of the head of the passenger.

Optionally, the deployed shape of the headrest airbag in the working state can also form an effective package on the back of the head of the passenger.

Optionally, the headrest airbag system further comprises a housing; the headrest air bag and the gas generator are arranged in the shell, wherein the headrest air bag is fixed on the inner side of the shell close to the opening of the shell; the headrest airbag system further comprises a gas generator support, the gas generator is fixed on the gas generator support, and the gas generator support is fixed at the bottom of the inner side of the shell. Optionally, the deployed shape of the headrest airbag in the working state can also form an effective package on the back of the head of the passenger.

The embodiment of the utility model also provides a headrest air bag which is arranged in the headrest body; the unfolding shape of the headrest airbag in the working state can effectively wrap the left side part and the right side part of the head of a passenger.

Optionally, the deployed shape of the headrest airbag in the working state can also form an effective package on the back of the head of the passenger. Compared with the prior art, the utility model has the advantages of it is following:

the utility model provides a headrest airbag system, which comprises a headrest airbag, a gas generator, an electronic control device, a headrest body and a sensor; the headrest airbag is arranged in the headrest body; the gas generator is connected with the headrest airbag through an air duct; the electronic control device is electrically connected with the sensor; the unfolding shape of the headrest airbag in the working state can effectively wrap the left side part and the right side part of the head of a passenger, so that when the left side part and the right side part of the head of the passenger and other objects, particularly hard objects, form secondary collision, for example, when secondary collision is generated among the heads of multiple passengers, effective buffering is formed, the injury on the side parts of the heads of the passengers is avoided or reduced, and the problem that the personal safety protection of the passengers by the traditional airbag is insufficient can be solved.

Drawings

Fig. 1 is a schematic view of an operational state deployment shape of a headrest airbag in a headrest airbag system according to a first embodiment of the present application;

FIG. 2 is a schematic view of a gas generator in a headrest airbag system according to a first embodiment of the present application;

FIG. 3 is a schematic view of a housing in a headrest airbag system according to a first embodiment of the present application;

fig. 4 is a schematic view of a housing of a headrest airbag system according to a first embodiment of the present application mounted to a headrest body;

fig. 5 is a schematic view of a gas generator bracket in a headrest airbag system according to a first embodiment of the present application.

A headrest airbag 1, a gas generator 2, a housing 3, a headrest body 4, and a gas generator bracket 5.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import by those skilled in the art without departing from the spirit of this application and is therefore not limited to the specific implementations disclosed below.

A first embodiment of the present application provides a headrest airbag system, and fig. 1 is a schematic view of an operational state deployment shape of a headrest airbag provided in the first embodiment of the present application. Fig. 2 is a schematic view of a gas generator in a headrest airbag system according to a first embodiment of the present application. Fig. 4 is a schematic view of a housing of a headrest airbag system according to a first embodiment of the present application mounted to a headrest body.

The headrest airbag system provided in the present embodiment includes a headrest airbag 1, a gas generator 2, an electronic control device (not shown), a sensor (not shown), and a headrest body 4; the above components will be described below.

The headrest airbag 1 is an airbag that is disposed at a headrest position of a car seat.

An airbag is an airbag that can protect the life of a passenger when a danger occurs, and has a space in which compressed gas can be charged, and an air inlet through which gas can be rapidly charged into the airbag is provided between the airbag and an external space, so that the airbag is rapidly deployed. The safety airbag has a setting state and a working state according to different states of the safety airbag.

The arrangement state refers to a state that the air bag is arranged at the air bag arrangement position after being compressed under the condition that the automobile is in normal working; in this state, the inner space of the airbag is not yet inflated and is folded and compressed in a manner adapted to the installation position space; the airbag may be classified into different types according to the position where the airbag is disposed, and the headrest airbag in this embodiment is the airbag disposed at the position of the headrest.

The working state refers to the state that when the automobile is collided and the like and meets the working conditions of the safety air bag, a large amount of gas is rapidly filled into the safety air bag from the air inlet, and the safety air bag is rapidly unfolded after being inflated, so that the safety air bag is in the inflated state capable of protecting passengers. For different types of airbags, the airbags can be unfolded into different shapes under the working state according to different protection requirements. The specific unfolding shape needs to be studied in detail on the protection position of the specific safety air bag, and different unfolding shapes are adopted according to the protection requirement.

In the present embodiment, the headrest airbag 1 is used for protecting the head of an occupant, and the specific collision form to be protected is mainly a secondary collision occurring in the vehicle after a primary collision of the vehicle body occurs, for example, mutual collision of the heads of occupants seated side by side, or collision of other hard objects to the side of the head; for this reason, in the present embodiment, a deployed shape as shown in fig. 1, that is, a shape similar to a helmet, is designed, which includes a left side air cushion, a right side air cushion, a top air cushion and a rear air cushion, and the deployed shape can form effective wrapping for the left, right, side, top and rear portions of the head of the occupant, and form reliable protection for the head; the face protection can be borne by airbags at other positions.

Of course, the above-described deployment shape is preferred, and in some cases, other simple deployment forms may be used, for example, the deployed airbag may not include the top cushion and the rear cushion, but only the left side cushion and the right side cushion, which may form an effective wrap around the left and right sides of the head of the occupant. The temples on the two sides of the head of the passenger are the weakest parts of the skull, and the middle cerebral artery is arranged below the temples, if the temples are impacted strongly in secondary collision, the blood vessels are broken and bleed greatly, intracranial hematoma is caused, and the person is in coma. Therefore, in the secondary collision, the effective protection of the left side and the right side of the head of the passenger is very important for protecting the personal safety of the passenger. In the secondary collision, the unfolding shape of the headrest airbag 1 can effectively wrap the left and right sides of the head of the passenger, so that when the left and right sides of the head of the passenger and other objects, particularly hard objects, form the secondary collision, for example, the heads of a plurality of passengers generate the secondary collision, effective buffering is formed, and the injury on the sides of the head of the passenger, particularly the temple, is avoided or reduced.

In some cases, the deployed headrest airbag 1 may include a rear cushion in addition to the left and right side cushions, which may also form an effective wrap around the rear of the head of the occupant. The back of the head of the occupant, particularly the back of the head and a part of the spine, are vulnerable to injury during a secondary collision. The back part of the brain has a respiratory and heartbeat center brain stem which is responsible for maintaining important physiological functions such as heartbeat, respiration, digestion, body temperature, sleep and the like, so that the back part of the brain is a 'life center', and the skull of the back part of the brain is relatively weak, and can cause fatal injuries such as intracranial hematoma and the like if the skull of the back part of the brain is strongly impacted in secondary collision. The backbone is the most fragile nerve center 'corridor' of the human body, and can be fatal once seriously damaged. Particularly, the fracture of the high cervical vertebra is easy to cause sudden stop of breathing and heartbeat. In the present embodiment, in the secondary collision, the deployed shape of the headrest airbag 1 can effectively wrap the rear portion of the head of the occupant, thereby avoiding or reducing the injury to the rear portion of the head of the occupant.

The gas generator 2 is mainly used for filling inflating agent, and the inflating agent can be selected in various ways. After the vehicle body is collided for the first time, the inflating agent can instantly decompose a large amount of gas under the heating of the igniting agent ignited and detonated by the igniter of the electronic control device, the gas is filled into the headrest airbag 1 through the gas guide pipe, the headrest airbag 1 is unfolded, and the injury of passengers in the secondary collision is avoided. As shown in fig. 5, in the present embodiment, the headrest airbag system further includes a gas generator bracket 5; the gas generator 2 is used for filling with an inflator, and the gas generator holder 5 is used for fixing the gas generator 2.

The electronic control device (not shown) and the sensor (not shown) are connected with the electronic control device, the sensor is used for detecting the forward acceleration signal and the lateral acceleration signal of the automobile in time and sending the signals to the electronic control device, and the signals are calculated, analyzed, compared and judged by the electronic control device to prepare to send out instructions at any time. When the signal changes and exceeds a set threshold value, the electronic control device sends an ignition instruction, so that the igniter ignites and detonates the ignition agent to heat the inflation agent, the inflation agent is instantly decomposed into a large amount of gas, the gas is filled into the headrest airbag 1 through the gas guide tube, the headrest airbag 1 is unfolded, and the head of a passenger is prevented from being injured in secondary collision.

As shown in fig. 4, the headrest body 4 is a headrest mounted on a car seat. The headrest airbag 1 and the gas generator 2 are installed in a headrest body 4, and in a preferred scheme, as shown in fig. 3, a shell 3 is arranged, wherein the shell 3 is a box body which is made of a hard material and is provided with an opening on one side, and the shell 3 is installed in the headrest body 4; the headrest airbag 1 is fixed on the inner side of the shell 3 close to the opening of the shell 3, so that the headrest airbag 1 is ejected from the opening of the shell during secondary collision, and the head safety of a passenger is protected.

Referring to fig. 1, 2, and 4, a headrest airbag system according to a first embodiment of the present invention includes a headrest airbag 1, a gas generator 2, a headrest body 4, an electronic control device (not shown), and a sensor (not shown). In the embodiment, the electronic control device is electrically connected with the sensor, the headrest airbag 1 is installed in the headrest body 4, and the gas generator 2 is connected with the headrest airbag 1 through the gas guide tube; the unfolding shape of the headrest airbag 1 in the working state can effectively wrap the left side part and the right side part of the head of a passenger, so that when the left side part and the right side part of the head of the passenger and other objects, particularly hard objects, form secondary collision, for example, when the heads of multiple passengers generate secondary collision, effective buffering is formed, the injury on the side parts of the heads of the passengers is avoided or reduced, and the problem that the traditional airbag is insufficient in personal safety protection of the passengers can be solved.

The second embodiment of the present invention provides a headrest airbag 1, wherein the headrest airbag 1 is installed in a headrest body 4; the unfolding shape of the headrest airbag 1 in the working state can effectively wrap the left side part and the right side part of the head of a passenger, so that when the left side part and the right side part of the head of the passenger and other objects, particularly hard objects, form secondary collision, for example, when the heads of multiple passengers generate secondary collision, effective buffering is formed, the injury on the side parts of the heads of the passengers is avoided or reduced, and the problem that the traditional airbag is insufficient in personal safety protection of the passengers can be solved.

Based on the fact that the headrest airbag 1 in the headrest airbag system provided by the first embodiment is used as the headrest airbag in this embodiment, that is, the specific implementation structure of the headrest airbag 1 in this embodiment can refer to fig. 1 and the corresponding contents in the above embodiments, and details are not described here.

In order to better protect the top and the back of the head of the passenger, especially the vulnerable parts such as the back head and part of the spine, which are vulnerable to the secondary collision, the headrest airbag 1 in the embodiment includes a top air cushion and a back air cushion in addition to the left side air cushion and the right side air cushion, and this form can effectively wrap the top and the back of the head of the passenger, so that the injury of the top and the back of the head of the passenger in the secondary collision can be reduced.

Although the present application has been described with reference to the preferred embodiments, it is not intended to limit the present application, and those skilled in the art can make variations and modifications without departing from the spirit and scope of the present application, therefore, the scope of the present application should be determined by the claims that follow.

Claims

1. A headrest airbag system, comprising: the headrest airbag, the gas generator, the electronic control device, the headrest body and the sensor;

the headrest airbag is arranged in the headrest body;

the gas generator is connected with the headrest airbag through an air duct;

the electronic control device is electrically connected with the sensor;

the unfolding shape of the headrest airbag in the working state can effectively wrap the left side part and the right side part of the head of a passenger.

2. The headrest airbag system according to claim 1, wherein the deployed shape of the headrest airbag in an operative condition is further effective to wrap a top portion of the head of the occupant.

3. The headrest airbag system according to claim 2, wherein the deployed shape of the headrest airbag in an operative condition is further configured to provide an effective wrap around the rear of the occupant's head.

4. The headrest airbag system according to claim 2 or 3, further comprising a housing; the headrest air bag and the gas generator are arranged in the shell, wherein the headrest air bag is fixed on the inner side of the shell close to the opening of the shell; the headrest airbag system further comprises a gas generator support, the gas generator is fixed on the gas generator support, and the gas generator support is fixed at the bottom of the inner side of the shell.

5. A headrest airbag which is applied to the headrest airbag system according to any one of claims 1 to 4, wherein the deployed shape of the headrest airbag in the operating state is capable of effectively wrapping the left and right side portions of the head of an occupant.

6. The headrest airbag of claim 5, wherein the deployed shape of the headrest airbag in an operational state is further effective to wrap the top of the head of an occupant.

7. The headrest airbag of claim 6, wherein the deployed shape of the headrest airbag in an operative condition is further effective to wrap a rear portion of the head of the occupant.